Manifold for internal-combustion engines



9- w. s. HEGINBOTTOM ET AL 1,724,431

I MANIFOLD FOR INTERNAL; COMBUSTION ENGINES I Filed April 2, 1925 Z Sheets-Sheet 1 g 1929- w. G. HEGINBOTTOM ET AL 1,724,481

MANIFOLD FOR INTERNAL COMBUSTION ENGINES v 2 Sheets-Sheet Filed April 2, 1925 II'IIIIIIIIF Patented Aug. l3, i929.

WALTER G. HEGINBOTTGM AND JACOB RICHARD FRANCIS, OF FLINT, MICHIGAN.

MANIFOLD FOR INTERNAL-COMBUSTION ENGINES.

Application filed April 2, 1925, Serial No. 20,167.

This invention relates to certain new and useful improvements in manifolds for internal combustion engines, and is a companion application of our application filed April 23,

s, 1919, Serial Number 292,08 l, now matured into'Patcnt l lo. 1,691,11A, Nov. 13, 19:28, the object being to provide electrical means for heating a laterally horizontally disposed pocket forniied on the induction pipe.

in Another and further object of our invention is to provide an electric heater which may be controlled by the throttle which enables the series of heating coils to be placed in circuit with electrical energy in such a manner that when the engine is cold all of the coils will be heated so as to thoroughly heat the pocket, said means being so constructed that as the throttle is open the heating coils will be cut out one at a time and when the throttle to is in open position only one coil will be in operation.

Other and further objects and advantages of the invention will be hereinafter set forth and the novel features thereof defined by the appended claims.

In the drawings Figure l is a vertical section of a portion of manifold showing the pocket or chamber provided with a helical coil conforming to the shape of the pocket.

Figure 2 is a vertical section through a portion of the manifold showing a helical coil arranged within the pocket over the inlet thereof.

Figure 3 is a similar view showing a resistance coil extending across the pocket, and

Figure & is a diagram showing a series of resistance coils arranged within the pocket or chamber in circuit with an electric battery, the circuits being closed by the movement of the throttle.

In Figures 1, 2 and 3 of the drawings we have shown a manifold l with a spherical oflsct pocket 2 in which is arranged a resistance coil or coils, but we do not wish to limit ourselves to any particular shape of pocket, as we have found that any horizontally disposed pocket on an intake manifold having means for heating the same will produce the desired result.

in figure 1 a helical coil 3 of resistance wire is disposed within the pocket, said coil conforming in shape to the pocket and spaced from the walls thereof and is adapted to be placed in circuit with electrical energy so that the heavier particles of fuel deposited within the pocket will be yaporized.

In Figure 2 a helical coil of wire 4 is disposed within the pocket over the month there of which is adapted to be placed in circuit with electrical energy so as to heat the pocket in order to vaporize the heavier particles which are deposited in the pocket.

in Figure 3 we show a construction by means of which a series ofcoils of wire 5 can 05 be disposed within the pocket which are adapted to ,be'placed in circuit with electrical energy so as to heat the pocket in order that the heavier particles which are drawn therein will be vaporized.

In the diagram shown in Figure 4 the coils 6, 7 and 8 are connected to one pole of the storage battery 9, and to contact plates 10, 11 and 12 are connected the opposite pole of the battery. These contact plates are shown arranged to be engaged by a circuit closer 13 I controlled by the throttle 14 and in the construction shown when the circuit closer 13 is in the position shown the central coil will be in circuit with the electrical energy so as to heat the chamber and when said closer is moved by the throttle into the closed position of the throttle all three of the coils 6', 7 and 8 will be in circuit soas to apply the greatest amount of heat in warming up the engine, but of course we do not wish to limit ourselves to any particular construction, the main idea being to provide an oifset pocket in the manifoldwith a heating coil which can be brought into operation manually or automatically, but we have found that by reducing the heat as the speed of the engine is increased better results can be obtained.

In all of the forms shown the heating coil of resistance wire for generating heat in an electric circuit is disposed within the oifset pocket and is adapted to heat said pocket which acts on the heavier particles of the fuel passing through the induction pipe, and we do not make any claim for the idea of the use of a heating coil arranged in the path of travel of the fuel from a charge forming device to an internal combustion engine, but are the first in the art to utilize a heating coil in an olfset pocket formed on the induction pipe which generates heat for vaporizing the heavy particles of fuel which are thrown or drawn into the pocket or chamber by suction, centrifugal force, their own inertia and gravity.

What We claim is 1. A manifold for internal combustion engines having a substantially horizontal passage and a substantially vertical passage, an offset pocket in said manifold at the junction of said passages in alignment With the horizontal passage thereof, a coil of an electrical resistance Wire disposed vertically Within said pocket spaced from the Wall thereof and means for supplying electrical energy to said resistance Wire.

2. A manifold for internal combustion engines having a laterally disposed offset pocket formed in line With the intake thereof, an electric heater disposed Within said pocket and means controlled by the throttle for decreasing the supply of electrical energy to said heater as the throttle is opened.

3. A manifold for internal combustion en-v gines having a substntially horizontally disposed portion and a substantially vertically disposed portion with an offset pocket at the junction of said portions into Which the heavier particles of fuel passing through said manifold are adapted to be deposited, an electric heater disposed Within said pocket formed of a series of heating elements arranged across the inlet thereof in the path of travel of said heavier particles for vaporizing the heavier particles of fuel deposited therein.

4. A manifold for internal combustion engines having an offset pocket into Which the heavier particles of fuel passing therethrough are adapted to be deposited, a heater composed of a series of heating elements arranged vertically Within said pocket and spaced from one another, means for supplying electrical energy to said heater and means operated by the throttle for decreasing the supply of electrical energy to said heater as the throttle is opened.

In testimony whereof We hereunto affix our signatures.

WALTER G. HEGINBOTTOM. JACOB RICHARD FRANCIS. 

